HomeSupportOperation for Mini Crawler Cranes

SUPPORT

Operation for
Mini Crawler Cranes

Operation
Maintenance

The steps listed below are for operating the Mini Crawler Cranes.
For more details, please see the instruction manual.

Prior to operation

Inspection

Before operating the vehicle, verify the condition of the crane has been inspected. Ensure there is no damage to the wire ropes and there are no oil leaks etc.

Switch to Travel mode.

Before operating the vehicle, verify the condition of the crane has been inspected. Ensure there is no damage to the wire ropes and there are no oil leaks etc.

URW094C / URW295C
Move the travel lever to the travel position.

URW376C / URW546C / URW547C / URW706C / URW1006C
Switch the interlock device to the travel position.

Turn the key to start the engine.

Operate the travel lever.

Change the operation mode.

Before operating the vehicle, verify the condition of the crane has been inspected. Ensure there is no damage to the wire ropes and there are no oil leaks etc.

URW094C / URW295C
Move the travel lever to the crane operation position.

URW376C / URW546C / URW547C / URW706C / URW1006C
Switch the interlock device to the operation position.

Extend the outriggers manually.

URW094C / URW295C / URW376C / URW546C / URW547C / URW706C
Remove the extension pins, manually unfold the outriggers to the extended position, and then insert the pins again to fix the outriggers.

URW094C / URW295C
Remove lock pin 1, fully raise the outer box of the outrigger, and then lock it with lock pin 1.
Remove lock pin 2, fully extend the outrigger by pulling the inner box, and then lock it with lock pin 2.

Place the outriggers with the control lever.

URW094C / URW295C
Toggle the operation mode switch to [Outriggers].
Toggle the outrigger activation selector switch to [Extend].
Extend the outriggers using the outrigger control lever and raise the crawler 5 cm or so above the ground.

URW376C / URW546C / URW547C / URW706C
Toggle the outrigger direction selector switch to [Horizontal].
Toggle the outrigger activation selector switch to [Extend].
Fully extend the inner box using the outrigger control lever.

Toggle the outrigger direction selector switch to [Vertical].
Extend the outriggers using the outrigger control lever and raise the crawler 5 cm or so above the ground.

Lower the hook.

Toggle the operation mode switch to [Crane].
Lower the hook and release the stowed hook to make the crane ready to operate.

Crane operation

Keep safety in mind.

For details on how to read the Load indicator and Load meter, see this
For details on how to read the Load chart, see this

Hazardous or unsafe crane operation

Overloading

Never attempt to overload the crane as overloading may damage the crane or cause the truck to fall over, leading to a serious accident.

Extracting objects from the ground

Extracting objects from the ground may overstress the crane, causing the crane to break. Excavate buried objects in the ground before attempting to moving them with a crane.

Dragging

Diagonally dragging cargo on the ground may overstress the crane to the point that it may break. Only move objects after they have been lifted with the hook.

Standing below the crane when traveling on a slope.

URW094C / URW295C
When traveling on a slope, always operate the crane from the side that is elevated; never from the side that is lower. If the truck were to fall over, injury may occur.
The permissible angles of slopes for traveling are 20 degrees longitudinally and 10 degrees laterally.

For other points to note, see the instruction manual.

After operation

Put the crane in the stowed position (boom stowing, lowering, slewing)

Move the relevant levers to stow everything but the hook. Raise the hook so that it does not touch the ground. Slew the crane so that it aligns with the stowed position sticker. (It automatically stops once in the stowed position.)

Stow the hook

Raise the hook until it stops automatically.
Afterward, toggle the stowing switch up to stow the hook.

Raise the outriggers.

Toggle the operation mode switch to [Outriggers].

URW094C / URW295C
Toggle the four outrigger selector switches to [Stow] and then move the control lever to gradually raise the outriggers.
(If the balance of hydraulic oil prevents them from contracting simultaneously, contract them one by one while checking the balance.)

URW376C / URW546C / URW547C / URW706C
Toggle the outrigger direction selector switch(A) to [Vertical].
Toggle the four outrigger selector switches (B) to [Stow] and then move the control lever (C) to gradually raise the outriggers.
(If the balance of hydraulic oil prevents them from contracting simultaneously, contract them one by one while checking the balance.)

Stow the outriggers.

URW094C / URW295C
Stow the outriggers manually.

URW376C / URW546C / URW547C / URW706C
Toggle the outrigger direction selector switch (A) to [Horizontal].
Toggle the four outrigger activation switches (B) up and then fully retract the outriggers with the control lever (C).
(If the balance of hydraulic oil prevents them from retracting simultaneously, contract them one by one while checking the balance.)

Return the crane to the drive position.

Remove the extension pins, then turn the outriggers to the stowed position, and then insert the pins again to lock the outriggers.

Operation forMini Crawler Cranes

Prior to operation

Inspection

Switch to Travel mode.

Turn the key to start the engine.

Operate the travel lever.

Change the operation mode.

Extend the outriggers manually.

Place the outriggers with the control lever.

Lower the hook.

Crane operation

Overloading

Extracting objects from the ground

Dragging

Standing below the crane when traveling on a slope.

After operation

Put the crane in the stowed position (boom stowing, lowering, slewing)

Stow the hook

Raise the outriggers.

Stow the outriggers.

Return the crane to the drive position.

Operation for
Mini Crawler Cranes